Also there is no guarantee that the file extension on the Markdown file is
`.md`. Some people use `.mkd` or `.txt` and it may even be an `.rst` file
so it may be better to use the old and tried generic pattern `%.[^%.]*$`,
which matches any extension, to match the file extension.


Den ons 18 mars 2020 23:37EBkysko <ebkysko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:

> ah, yes, good, that way we're sure we iterate on a fixed list, a snapshot
> before the changes.
>
> so with this, and a check on the mime type, we get something like :
>
>
> -----
> local outputfile = PANDOC_STATE.output_file:gsub("%.md", "")
>
> local function prefixName(s)
>   return s:gsub("([^/]*)$", outputfile .. "_%1")
> end
>
> function Image(img)
>   img.src = prefixName(img.src)
>   return img
> end
>
> function Pandoc(doc)
>   for _,f in ipairs(pandoc.mediabag.list()) do
>     local fp = f.path
>     local mt, contents = pandoc.mediabag.lookup(fp)
>     if mt:match("^[^/]*") == "image" then
>       local fpnew = prefixName(fp)
>       pandoc.mediabag.insert(fpnew, mt, contents)
>       pandoc.mediabag.delete(fp)
>     end
>   end
> end
> -----
>
>
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